Today | Weather | Thursday, July 2, 2026

Weather in Redwood City, California

07:12 PM
Now
Cloudy Weather
70° F
Feels Like 70°
Precipitation 0 %
Wind 9 mph
UV Index (0 - 11+) 1
Humidity 61 %
Today
Cloudy Night
Day 75°
Night 55°
Precipitation 6 %
Wind 6 mph

Redwood City Weather Forecast Updated

7 minutes ago
Last updated on

Air Quality in Redwood City

NOW
31 AQI
Good air quality Dominant pollutant: O3

Pollutant Concentrations:

PM2.5 5.2 µg/m³
PM10 17.13 µg/m³
O3 0.034 ppm
NO2 0.3 ppb
SO2 0.4 ppb
CO 0.07 ppm
NH3 0 µg/m³
NO 0.02 µg/m³
PM2.5 – Fine particles <2.5μm
PM10 – Inhalable particles <10μm
O3 – Ozone
NO2 – Nitrogen dioxide
SO2 – Sulfur dioxide
CO – Carbon monoxide
NH3 – Ammonia
NO – Nitric oxide

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.

Show raw pollutant concentrations (µg/m³)
PM2.55.2 µg/m³
PM1017.13 µg/m³
O366.4 µg/m³
NO20.48 µg/m³
SO21.04 µg/m³
CO79.04 µg/m³
NH30 µg/m³
NO0.02 µg/m³